US 12,461,134 B2
Specific absorption rate detection assembly, specific absorption rate detection method, and electronic device
Yizhou Luo, Guangdong (CN); and Jia Wang, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Nov. 9, 2023, as Appl. No. 18/505,792.
Application 18/505,792 is a continuation of application No. PCT/CN2022/086397, filed on Apr. 12, 2022.
Claims priority of application No. 202110529076.3 (CN), filed on May 14, 2021.
Prior Publication US 2024/0069084 A1, Feb. 29, 2024
Int. Cl. G01R 29/08 (2006.01); G01R 29/26 (2006.01)
CPC G01R 29/0892 (2013.01) [G01R 29/0857 (2013.01); G01R 29/26 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A specific absorption rate (SAR) detection assembly, comprising:
a sensing branch configured to sense a capacitive signal;
a detection branch, a first end of the detection branch being connected to the sensing branch, the detection branch being configured to transmit the capacitive signal and generate a first noise signal by sensing ambient noise;
an SAR sensor connected to a second end of the detection branch, the capacitive signal and the first noise signal being transmitted to the SAR sensor by the detection branch; and
a compensation branch, a first end of the compensation branch being connected to a reference power-supply terminal, a second end of the compensation branch being connected to the SAR sensor, the compensation branch being configured to generate a second noise signal by sensing ambient noise and transmit the second noise signal to the SAR sensor, and the second noise signal being used to simulate the first noise signal to compensate, through the second noise signal, the capacitive signal and the first noise signal that are transmitted to the SAR sensor by the detection branch;
wherein a layout path of the compensation branch is consistent with a layout path of the detection branch.